影响广西的强雷电天气启动机制对比研究  

Comparative Study on Activated Mechanism of Thunder Weather of Guangxi

作　　者：黎梓华[1] 

机构地区：[1]桂林市气象局,广西桂林541001

出　　处：《气象研究与应用》2012年第1期83-86,I0002,共5页Journal of Meteorological Research and Application

基　　金：广西科技厅项目(桂科自0728076);桂科攻0719005-3-2

摘　　要：通过对两次大范围强雷电天气的分析得出:冷锋切变线南压和副热带高压西伸都能造成广西大范围强雷电天气,其中,2007年4月17日过程具有干冷空气的中层入侵,大气雷电性不稳定非常明显,而2004年7月21日过程主要是由于东南气流加强和地形的影响,造成气流辐合抬升。Basing on the analysis of two strong lightning storms in Guangxi,the influencing weather systems were discussed.It shows that the southward shear line of cold front and subtropical high westward extension can cause a large scale strong lightning storms.The storm process of April 17,2007 accompanies dry cold air invasion with obvious atmospheric lightning instability.The storm process of Junly 21,2004 was influenced by the convergence and uplift of airflow caused by southeast airflow strengthen and topography.

关 键 词：强雷电 冷锋切变 副热带高压 

分 类 号：P427.3[天文地球—大气科学及气象学]